1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb7a47fadd2a79e1befb51ab2ce6b3f8da530df680ae0be052fcd8b3e9f56fe. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd3b9847-1f1d-4395-a11b-ba63cf7afd55.json and https://artists.proofprofile.net/proofs/artist/dd3b9847-1f1d-4395-a11b-ba63cf7afd55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae19670611e68a320d7e70ef4022c4b0a362177a2a05b5a213e27f4af8a6c99. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S1948739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5b6f324e22c6bd35d8ea630ceaa3bed2b7ebf397b3a7a3687d656c15c5d118. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR26V2020989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8f8c12f732a1609b01b5ce80d37dbc22bee6f37dae1bb9aae3b1bdf5188fa5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452176156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23d1019e411415133377f05bb24f681677fa8195d707791259b58a4bce5bc50. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762112791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a74cfa5e7afaab3944b35e088d25019d07daa69c3d10f9c09e6f339a549a95d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:37:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762129192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9983a278755e91b1837d9257008886ae5015b523bf491e3bb4b9344d92286aa4. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452233385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a86dda12a78eff1e2f14a3b83145e20a8cb4d59a8818110677e90bbe75aebc4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762339081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa611692127520405ec92ca2de1be5f84fb838de3180822b1ef670d2f836f83f2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA092356687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a45bb32f905e8b5debc963f1018d48be04d61ba1af8859f47ebc33c8a8c076. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA092356691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf23a70d0f7b99fcefb2955bff9a9ecde733070280e442721f89ef27d2dd9e12. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0M2366720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44978fa7e987dd8a8608d69568b9cc5c48dae4c33d0b847318ffef997ffd539. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INC622211568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755c1668a1b95940989970ab6040ee20131e594e72551094754b521ba4586f12. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2419420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ac8645f373f4d9ad42e7dbf78020121136a7e8beaefb83ad6ed775ad959fc1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INF432400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8969f7c67d394d40e547bbcd19ca11b3e14f889385589649add99a88a481823d. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC2473750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018fd886592efe4f699cc4fecfefbd9c52b8e71e1f0f1a5b291b081440575201. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0P2458119.